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authorPavel Emelyanov <xemul@openvz.org>2008-05-06 18:51:31 +0400
committerJohn W. Linville <linville@tuxdriver.com>2008-05-12 21:22:19 -0400
commit6d6936e2ea82ebcbdd12d489b7b5ccf430de52f1 (patch)
treebf731ba146332b201c79e28629fe74262b7bff5c /net/mac80211
parent0eb03d5a14377eecf6ed0ebf3cc2c9f48c12c7c6 (diff)
downloadop-kernel-dev-6d6936e2ea82ebcbdd12d489b7b5ccf430de52f1.zip
op-kernel-dev-6d6936e2ea82ebcbdd12d489b7b5ccf430de52f1.tar.gz
Fix potential scheduling while atomic in mesh_path_add.
Calling synchronize_rcu() under write-lock-ed pathtbl_resize_lock may result in this warning (and other side effects). It looks safe just dropping this lock before calling synchronize_rcu. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/mesh_pathtbl.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 1d2d051..99c2d36 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -220,9 +220,10 @@ endadd:
return -ENOMEM;
}
rcu_assign_pointer(mesh_paths, newtbl);
+ write_unlock(&pathtbl_resize_lock);
+
synchronize_rcu();
mesh_table_free(oldtbl, false);
- write_unlock(&pathtbl_resize_lock);
}
endadd2:
return err;
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